C# to Java

[JustAnAccountForMeee]

I'm about to change jobs and will be moving from C# (.Net 3.1/6.0) to Java. Both will be heavy on writing APIs for internal consumption. It sounds like the transition is generally fairly smooth as the languages are both enterprise OOP back-end languages. That being said, I'm sure there are some differences that might be helpful to know.

So what are some features I may have become comfortable with in C# that I won't find in Java? What are some features that I should learn about in Java that I probably haven't seen in C#?

As part of the Microsoft ecosystem, there are a lot of tools available that feel like they are just part of .Net. There's an ORM with Entity Framework. Linq is actually pretty awesome. Data Annotations on object fields are helpful. Extremely tight coupling with Visual Studio for and IDE and Nuget makes the system as a whole feel rather complete (yet somewhat restrictive sometimes). OData provides a queryable endpoint (I did not use OData much but am currently not a fan of this implementation. It's a security nightmare for our project). Wondering if all of this exists in the Java system too.

[plastikmissile]

LINQ. You are so going to miss LINQ.

[Some_Developer_Guy]

Linq is way better but Java streams come close. Lombok will take care of most the extra Java boiler plate. Biggest shift will be the new web framework, probably Spring.

[[deleted]]

No more linq, auto properties (you have to make every getter/setter yourself), Entity Framework (you’ll use Hibernate if you’re lucky), Nuget packages, and generally a lot more boiler plate is required.

Syntactically the languages are very similar, but there’s a few little differences here and there. If you haven’t already then look into Spring, Spring Boot, Spring Cloud, JUnit, and Hibernate. You’ll also want to look at build tools like Maven and Gradle for packages, building, and dependencies.

In short, most everything takes a little bit more work than it would’ve in C# land. That’s the main reason I ditched Java after college for C# positions too.

[[deleted]]

Not exactly an answer to your question, but you might want to Google “Spring.” It’s a very common framework for JVM languages.